i have a question for anyone running an offenhauser intake and using engine coolant to heat the intake. when i ordered my headers from tom langdon he told me that the freeze plugs in the bottom of the intake will leak and he has a write up on how to make sure it doesn't leak, has any one had this issue? how long will it take before it leaks? and what did you do to fix it?
here is a link to toms write up on this issue..
http://stoveboltengineco.com/2012/02...let-manifolds/
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1968 chevy c10 lwb, 250 inline6, 4 speed,